MARYLAND FLOW REPORT
Last Updated: December 26, 2025
Streamflow levels across
Maryland
are currently
31.0% of normal, with the
Susquehanna River At Conowingo
reporting the highest discharge in the state with
16600cfs and gauge stage of 11.36 ft.
Meanwhile, the
Susquehanna River At Conowingo
is seeing a spike in streamflows today after experiencing a
26.72%
increase since yesterday, and currently running at
16600cfs.
Maximum gauge stage in the state was last observed at the
Susquehanna River At Conowingo, currently reporting a stage of
11.36ft.
The
Youghiogheny River At Friendsville
in the
Youghiogheny
watershed
is surging for this time of year at
611cfs, about
-5.16% of normal.
Maryland's flow conditions are heavily influenced by its location along the Atlantic coast and the Chesapeake Bay, as well as its varied topography. The state experiences a humid subtropical climate, with hot and humid summers and mild winters. Major surface flows include the Potomac and Patuxent Rivers, which feed into the Chesapeake Bay. Reservoirs and dams such as the Conowingo Dam and Loch Raven Reservoir also contribute to the state's hydrology. The state's watershed includes the Chesapeake Bay watershed, which covers 64,000 square miles and includes six states and the District of Columbia. Snowpack in the Appalachian Mountains can also impact flow conditions in the state. Overall, Maryland's flow conditions are complex and influenced by a variety of factors.